Examine source code of Phoenity Next

{
  "theme": {
    "images": {
      "theme_frame": "phoenity-personaheader_v4_chiaro-LOGO-PhoenityReborn.png"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Phoenity Next",
  "manifest_version": 2,
  "description": "\"Phoenity Next\" Persona. Try Phoenity Themes for Firefox, too!"
}